Kamiina District, Nagano

• Iijima
• Minamiminowa
• Minowa
• Miyada
• Nakagawa
• Tatsuno

History

• 1878 - The district was founded by the division of Ina District. The seat was located at Ina.
• April 1, 1954 - The towns of Ina merged with the villages of Tomigata, Midori, Shura, Higashiharuchika, and Nishiminowa to form the city of Ina.
• July 1, 1954 - The towns of Akaho and Miyada merged with the villages of Ina and Nakazawa to form the city of Komagane.
• January 1, 1955 - The town of Nakaminowa merged with the villages of Minowa and Higashiminowa to form the town of Minowa.
• April 1, 1955-The town of Tatsuno merged with the village of Asahi to form the new town of Tatsuno.
• September 30, 1956 -
• *The town of Tatsuno absorbed the village of Kawashima.
• *The town of Takatō merged with the villages of Nagafuji and Miyoshi to form the new town of Takatō.
• *The town of Iijima merged with the village of Nanakubo to form the new town of Iijima.
• *The village of Miyada broke off from the city of Komagane.
• *The town of Kamikatado merged with the village of Oshima from Shimoina District to form the town of Matsukawa in Shimoina District.
• April 1, 1958 - The town of Takatō absorbed the village of Fujisawa.
• August 1, 1958 - The villages of Nanko and Katado merged to form the village of Nakagawa.
• April 1, 1959 - The villages of Inari and Miwa merged to form the town of Hase.
• March 31, 1961 - The town of Tatsuno absorbed the village of Ono.
• April 1, 1965 - The town of Takatō absorbed the village of Kawanan.
• April 1, 1965 - The city of Ina absorbed the village of Nishiharuchika.
• March 31, 2006 - The town of Takatō and the village of Hase merged with the city of Ina to form the city of Ina.